Home / 31,806.40-47,709.60-19,996.60

Finding the Fourth Proportional to 31,806.40, 47,709.60 and 19,996.60

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Solution

The fourth proportional to 31,806.40, 47,709.60 and 19,996.60 is: 29,994.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,806.40 : 47,709.60 = 19,996.60 : x
  2. Step 2: Convert to fraction form
    31,806.40/47,709.60 = 19,996.60/x
  3. Step 3: Cross multiply
    31,806.40x = 47,709.60 × 19,996.60
  4. Step 4: Simplify right side
    31,806.40x = 954,029,787.36
  5. Step 5: Solve for x
    x = 954,029,787.36/31,806.40
  6. Step 6: Final answer
    x = 29,994.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.